The game was released on November 23, 2005 in Japan and on September 13, 2006 in the USA.
The main style of gameplay is the Board Game, which features a massive gameboard consisting of dozens of panels. The objective of the game is to have as much money as possible when every tile belongs to a player. Each player has two varieties of money - the money earned from winning a minigame and the money earned from simply owning a panel. Note that while the latter is easily increased (and just as easily decreased), only three effects in the entire game can affect the former.
Each of the four players take turns uncovering panels around the gameboard; who goes first is determined by a minigame at the beginning that takes place at the center panel. While at the beginning, players can only uncover panels that are close to the central one, as the game goes on, more panels may be uncovered. A panel owned by a player is marked by being bordered with the player's colors; if the color is gray, then nobody owns it and anyone can select it.
There are 5 kinds of boards in the game, each one representation a place from the story. The shape and size of each board is different for the others'.
There are three types of panels on the gameboard:
Event: These panels, when uncovered, results in the player who uncovered them immediately gaining ownership of them. All event panels have some sort of effect, from increasing/decreasing the player's money to gaining ownership of a panel that an opponent owns.
Mini-Game: These panels, when uncovered, list a trio of minigames, one of which the player that uncovered it chooses to engage in with all the other players. The winner of the minigame gains ownership of the panel.
Captain: These panels, when uncovered, result in a special minigame where the player who uncovers them plays as the captain of the game, and follows different rules than all the other players. If the captain wins, the player who uncovered the panel earns ownership of it, while if one of the other players win, they gain ownership of it. Note that captain panels are always found in pairs, and that if a player gains ownership of one, the other is also revealed and brought under ownership of him/her. Similarly, captain panels also change ownership/get destroyed/get frozen in unison.
Note that if two panels of the same color are in line with one another, all uncovered panels between them with different colors switch to the color of the two panels on the edges, and are brought under ownership of the player with the color.
Any game that the player has participated is automatically added to the Versus Game section, to be played at leisure. The games are classified into these categories:
Usually only uncovered by the Mini-Game panel. These include:
Ship Battle Royale: Players battle each other onboard the Going Merry.
Pirates' Concentration: Players take turns flipping over tiles featuring members of the Straw Hat Pirates on a giant raft, searching for matches.
Going Merry Shooting Gallery: Players use the Going Merry's cannon to shoot islands & ships to gain points.
Yuba Sand Digout: Players dig for water in Yuba while avoiding sandstorms.
Kung Fu Dugong Punch Out: Players spar with the Kung-Fu Dugongs, trying to knock as many of them into the other players' territories as possible.
Supersonic Ledge Race: Players ride spot-billed ducks up the Alubarna Plateau.
Sunken Treasure Salvage: Players explore a sunken ship in diving suits, searching for treasure while avoiding the punches of Masira.
Balloon Dive Chicken Race: Players use the octopus balloon to descend from Skypiea and onto the Going Merry.
Battle of the Long Stilts: Players walk within a ring on massive stilts, attempting to knock each other over.
Where Is Pandaman?: Players use telescopes to search for Pandaman in a large crowd.
The player who uncovers a captain tile gets to play as the captain. All the other players face off against them in a mini-game. Once in a while, captains will mutiny, forcing all four players to battle against them.
Chop-Chop Festival: Players battle Buggy by stepping on either his head or lower body. Buggy himself can attack of his own will and go into a "berserker" mode whenever he is hit. Mohji and Cabaji will also be firing cannonballs at the players.
Indiscriminate Attack! Shakushi Garden: Players battle Kuro in Kaya's front yard while avoiding Jango's hypnosis. Kuro himself can create a trail of light when he starts running, and can surround players with it, attacking them all at once with his trademark Shakushi technique. The English version renames this game The Cat Out of the Bag.
Beware the MH5!: Players jump across pieces of the Baratie's fins and Krieg's ship to reach Don Krieg himself. The entire stage is covered with poison gas, and players must periodically acquire gas masks to deplete their poison meter, or they will die. Krieg himself can hinder players with spears and (if he acquires one) bombs.
Arlong Darts Park: Players engage in a game of darts at Arlong Park. Arlong himself takes his turn after all three players, and only gets three shots as opposed to the other players getting four. However, he can knock down other players' darts to steal their points, and the three spots that he chose form a triangle. Any darts within the triangle instantly have their score stolen by Arlong.
Little Garden Bomb Battle: Players battle the giants Dorry and Brogy on Little Garden by tossing bombs at the giants' feet. Dorry and Brogy can retaliate by stepping on the players, guided by a skull mark.
Wapol's Munch-Munch Factory: Players battle a rotating Wapol (in the center of the stage) by hitting his heart, which pops out at a random spot every time he attacks. In addition to using cannons and hammers, Wapol can also devour anyone who he is facing, filling up a gauge. When the gauge is filled, Wapol can engage in a secret technique that attacks all opponents.
Mr. 4's Batter Up!: Players attempt to deflect the exploding baseballs that Mr. 4 hits their way. In addition to normal baseball bombs, Mr. 4 can also have Lassoo sneeze out up to three "tornado shots" that automatically explode.
Crocodile's Suna Suna Hell: Players battle Crocodile with water guns while attempting to not get sucked into the "Desert Girasole". Crocodile himself can dodge water shots and retaliate with Desert Spada and sandstorms. The English version renames this game Crocodile's Sand Trap.
Chomp It Up! Pie Eatout: Players engage in a pie-eating contest with Blackbeard, taking care to avoid bombs mixed in with the pies. Doc Q will periodically appear at Blackbeard's side, allowing Blackbeard to delay his opponents with a "sneak attack" of apples (which take several seconds to reveal).
Spring Hopper Daredevil: Players attempt to dodge Bellamy's bouncing attacks while trying to cross three sections of Mock Town. Bellamy himself creates a hole in the dock wherever he lands if he does not hit anybody, and these holes cause instant death if a player falls through them. If two or more have survived all three sections of Mock Town, Bellamy goes into a frenzied "Spring Hopper" that does not stop until there is only one player left standing.
Assault! Wiper the Berserker: Players must stop Wiper from destroying the Going Merry by absorbing his bazooka shots. Wiper himself can fire an extra-potent shot if he stops firing for a while. The English version renames this game Wyler Strikes!
Illusion Forest, Ordeal of Orbs: Players must knock exploding Surprise Orbs toward Satori. Satori himself can either deflect them with his cane or connect Surprise Orbs to the one that he is standing on, and once he has connected four, he can use the Orb Dragon technique, which allows him to hurt players just by touching them.
Light the Shandorian Fire!: Players must reach the Golden Bell by climbing up Giant Jack and avoiding a rotating thunder cloud. Enel follows the players on another cloud, and attacks them with "30,000,000 Volt Hino" (which is horizontal) and "El Thor" (which is vertical).
The Suitcase Scramble: Players battle Paulie over five suitcases of money in a Dock One lumberyard; the first to retrieve three suitcases wins. Hammers can be used to attack other players, attack Paulie, or knock a suitcase out of another player's area. The English version replaces Paulie with Chaser.
House Special! Anything-Goes Cannon: Players raid the Franky House for treasure while avoiding Franky's attacks and the junk fired out of the cannons. Franky can grab players and toss them into the cannon, firing them out. The English version renames this game Chop-Chop Harpoon Mayhem, replacing Franky with Buggy (who now sports his Loguetown arc anchor makeup).
Doa Doa Panic Maze: Players try to escape the burning Galley-La Headquarters while evading Blueno, who can freely pass through the maze-like walls to attack the players, and can alter the direction of the flames up to three times. The English version renames this game Pandaman's Panic Maze, replacing Blueno with Pandaman .
Burning Briar Road: Players battle Kaku & Kalifa within the burning Galley-La Headquarters, dodging their whip attacks while trying to toss them into the nearby flames. The CP9 agents can stop at any time and start spinning in a circle, increasing the range of their attack. The English version renames this game Twirling Whips of Flame, replacing the agents with Mohji & Cabaji.
Lucci's Pursuit! Beware the Neko Neko: Players run through the burning Galley-La Headquarters, while Rob Lucci chases them and attempts to stop them by throwing burning furniture and utilizing his Rokushiki techniques. The English version completely removes this game.
Straw Hat Members' GamesEdit
Unlike the other Captain Games, the Straw Hats' games cannot accessed by uncovering tiles. The only way to play these games is to challenge a member's tile over a Davy Back Fight.
Gum Gum Carnival: A rhythmic game where the players battle Luffy. Luffy attacks by selecting certain beats in a tune, and the other players must attack/dodge by selecting the same beat.
Thundering Swordplay: The other players battle Zoro within a ring, which is slippery from the rain. Players must force Zoro out of the ring while being careful to not get thrown out themselves.
Defend Usopp Factory!: A guessing game where the other players attempt to snatch treasure from one of three doors. Usopp stands in the middle, and must choose a door to protect.
Cooking Fighter: The other players attempt to steal food aboard the Baratie as Sanji throws it to Patty. Sanji himself can throw forks at them to slow them down, and must deliver five dishes to Patty before any of the players can successfully steal three.
Wave the Pirate Flag!: The other players attempt to steal a pirate flag from Chopper upon Drum Castle and wave it to fill a gauge. Chopper himself must place the flag upon each of the castle's seven sections and turn the snow pink.
The Ancient Ruin Mystery: Players attempt to steal treasure from the ruins of Shandora and bring it back to their own camp. Robin is deciphering poneglyphs, and must either completely decipher them, or defeat all the players before any of them can acquire 100,000,000.
- The opening sequence in the game was heavily edited for the English dub (which was translated by 4kids). In the frames where Franky and the Franky Family were seen, it was replaced by in game screen pans of Buggy, Mohji, and Cabaji. Blackbeard, Enel, and the Foxy Pirates screen time in the opening was also removed for gameplay footage. In one of the final segments, where it showed a group of characters, Wiper and Bellamy were replaced with Crocodile and Mr. 2 Bon Kurei, and Porche of the Foxy Pirates was replaced with Hina.
- Though they were cut from the opening, for some reason 4Kids Entertainment decided to keep the Skypiea stage in the game, but made the board a secret and can only be accessed through a password. Blackbeard, Bellamy, Wiper (dubbed Wyler by 4kids), Satori, and Enel are all still in the game.
- Certain Captain game characters were also taken out, for example, Kalifa and Kaku were replaced with Cabaji and Mohji, Blueno was replaced with Pandaman, and Franky and the Franky Family were replaced with Buggy and Cabaji. All the mini-games were still the same in playability, but the speaking role before each game shows a one picture panel for Panda Man and Cabaji/Mohji. Rob Lucci's minigame was completely taken out for the 4kids English version.
- The U.S. game cover features character cover art images used for the Japan and Europe only game One Piece: Round the Land. The only edit to the character images was that Sanji is holding two Wapol chests in the U.S. while in Japan, Enel was one of the chests as well.